19749990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{569}}^1$

素因数の和:681

約数の個数: 64

約数和(自身を含む): 51710400

約数和(自身を除く): 31960410

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 89, 130, 178, 195, 267, 390, 445, 534, 569, 890, 1138, 1157, 1335, 1707, 2314, 2670, 2845, 3414, 3471, 5690, 5785, 6942, 7397, 8535, 11570, 14794, 17070, 17355, 22191, 34710, 36985, 44382, 50641, 73970, 101282, 110955, 151923, 221910, 253205, 303846, 506410, 658333, 759615, 1316666, 1519230, 1974999, 3291665, 3949998, 6583330, 9874995, 19749990]

約数ペア:

[(1, 19749990), (2, 9874995), (3, 6583330), (5, 3949998), (6, 3291665), (10, 1974999), (13, 1519230), (15, 1316666), (26, 759615), (30, 658333), (39, 506410), (65, 303846), (78, 253205), (89, 221910), (130, 151923), (178, 110955), (195, 101282), (267, 73970), (390, 50641), (445, 44382), (534, 36985), (569, 34710), (890, 22191), (1138, 17355), (1157, 17070), (1335, 14794), (1707, 11570), (2314, 8535), (2670, 7397), (2845, 6942), (3414, 5785), (3471, 5690)]